Reflective object sensor OPTEK OPB741WZ with infrared LED and NPN phototransistor in compact housing
Product Overview
The OPB708, OPB709, OPB740 through OPB746, and OPB740WZ through OPB746WZ series are reflective object sensors. Each unit comprises an infrared emitting diode and either an NPN silicon phototransistor or a photodarlington. The OPB747WZ and OPB748WZ models feature a Red visible LED paired with a low light level rejection (RBE) NPN silicon phototransistor, offering enhanced contrast for detecting black marks on white surfaces. These sensors are housed in black plastic with converging optical axes, designed for focused detection within a specific area and depth of field. The OPB _ _ WZ series includes UL-approved wired devices with various lens options for dust protection or improved target resolution. These sensors detect reflective objects within their field of view. Custom options for current binning, wire lengths, and connectors are available.
Product Attributes
- Brand: TT electronics plc
- Series: OPB708, OPB709, OPB740 Series, OPB740WZ Series
- Material: Black plastic housing, Polysulfone (for certain lens configurations)
- Certifications: UL approved wire (for WZ series)
- Origin: Not specified
- Color: Infrared LED, Red visible LED
Technical Specifications
| Part Number | LED Peak Wavelength | Sensor Type | Reflection Distance (Inch [mm]) | Lead Length/ Wire Type | Lens Configuration | Output Type | Collector-Emitter Voltage (V) | Emitter-Collector Voltage (V) | Power Dissipation (mW) | Forward Voltage (V) | Reverse Current (A) | Collector Dark Current (nA/A) | On-State Collector Current (mA) | Crosstalk (A) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OPB708 | 935 nm | Transistor | Min=0.08" [2.04 mm] Typ=0.15" [3.81 mm] Max=0.30" [7.62 mm] | 0.150" Minimum | D - No windows | Phototransistor | 30 | 5.0 | 100 | 1.7 | 100 | 100 nA | 0.01 - 3.00 | 10.0 |
| OPB709 | 935 nm | Darlington | Min=0.08" [2.04 mm] Typ=0.15" [3.81 mm] Max=0.30" [7.62 mm] | 0.150" Minimum | D - No windows | Photodarlington | 15 | 5.0 | 100 | 1.7 | 100 | 25 A | 1.00 - 26.0 | 10.0 |
| OPB740 | 890 nm | Transistor | Min=0.08" [2.04 mm] Typ=0.15" [3.81 mm] Max=0.30" [7.62 mm] | 0.150" Minimum | A - No windows | Phototransistor | 30 | 5.0 | 100 | 1.8 | 100 | 100 nA | 0.05 - 2.50 | 10.0 |
| OPB740WZ | 890 nm | Transistor | Min=0.08" [2.04 mm] Typ=0.15" [3.81 mm] Max=0.30" [7.62 mm] | 24" / 26 AWG Wire | A - No windows | Phototransistor | 30 | 5.0 | 100 | 1.8 | 100 | 100 nA | 0.05 - 2.50 | 10.0 |
| OPB741 | 890 nm | Transistor | Min=0.08" [2.04 mm] Typ=0.15" [3.81 mm] Max=0.30" [7.62 mm] | 0.150" Minimum | B - Blue windows | Phototransistor | 30 | 5.0 | 100 | 1.8 | 100 | 100 nA | 0.05 - 2.50 | 10.0 |
| OPB741WZ | 890 nm | Transistor | Min=0.08" [2.04 mm] Typ=0.15" [3.81 mm] Max=0.30" [7.62 mm] | 24" / 26 AWG Wire | B - Blue windows | Phototransistor | 30 | 5.0 | 100 | 1.8 | 100 | 100 nA | 0.05 - 2.50 | 10.0 |
| OPB742 | 890 nm | Transistor | Min=0.08" [2.04 mm] Typ=0.15" [3.81 mm] Max=0.30" [7.62 mm] | 0.150" Minimum | C - Offset windows | Phototransistor | 30 | 5.0 | 100 | 1.8 | 100 | 100 nA | 0.01 - 0.70 | 1.0 |
| OPB742WZ | 890 nm | Transistor | Min=0.08" [2.04 mm] Typ=0.15" [3.81 mm] Max=0.30" [7.62 mm] | 24" / 26 AWG Wire | C - Offset windows | Phototransistor | 30 | 5.0 | 100 | 1.8 | 100 | 100 nA | 0.01 - 0.70 | 1.0 |
| OPB743 | 890 nm | Transistor | Min=0.08" [2.04 mm] Typ=0.15" [3.81 mm] Max=0.30" [7.62 mm] | 0.150" Minimum | A - No windows | Phototransistor | 30 | 5.0 | 100 | 1.8 | 100 | 100 nA | 0.20 - 2.00 | 20.0 |
| OPB743WZ | 890 nm | Transistor | Min=0.08" [2.04 mm] Typ=0.15" [3.81 mm] Max=0.30" [7.62 mm] | 24" / 26 AWG Wire | A - No windows | Phototransistor | 30 | 5.0 | 100 | 1.8 | 100 | 100 nA | 0.20 - 2.00 | 20.0 |
| OPB744 | 890 nm | Transistor | Min=0.08" [2.04 mm] Typ=0.15" [3.81 mm] Max=0.30" [7.62 mm] | 0.150" Minimum | B - Blue windows | Phototransistor | 30 | 5.0 | 100 | 1.8 | 100 | 100 nA | 0.20 - 2.00 | 20.0 |
| OPB744WZ | 890 nm | Transistor | Min=0.08" [2.04 mm] Typ=0.15" [3.81 mm] Max=0.30" [7.62 mm] | 24" / 26 AWG Wire | B - Blue windows | Phototransistor | 30 | 5.0 | 100 | 1.8 | 100 | 100 nA | 0.20 - 2.00 | 20.0 |
| OPB745 | 890 nm | Darlington | Min=0.08" [2.04 mm] Typ=0.15" [3.81 mm] Max=0.30" [7.62 mm] | 0.150" Minimum | C - Offset windows | Photodarlington | 15 | 5.0 | 100 | 1.8 | 100 | 25 A | 5.00 - 26.0 | 25.0 |
| OPB745WZ | 890 nm | Darlington | Min=0.08" [2.04 mm] Typ=0.15" [3.81 mm] Max=0.30" [7.62 mm] | 24" / 26 AWG Wire | C - Offset windows | Photodarlington | 15 | 5.0 | 100 | 1.8 | 100 | 25 A | 5.00 - 26.0 | 25.0 |
| OPB746WZ | 935 nm | RBE Transistor | Min=0.08" [2.04 mm] Typ=0.15" [3.81 mm] Max=0.30" [7.62 mm] | 24" / 26 AWG Wire | B - Blue windows | RBE Phototransistor | 24 | 0.4 | 100 | 1.7 | 100 | 10 nA | 0.50 - 2.50 | 1.0 |
| OPB747WZ | 645 nm | Transistor | Min=0.08" [2.04 mm] Typ=0.15" [3.81 mm] Max=0.30" [7.62 mm] | 24" / 26 AWG Wire | C - Offset windows | Phototransistor | 15 | 0.4 | 100 | 2.6 | 100 | 10 nA | 0.01 - 0.70 | 1.0 |
| OPB748WZ | 645 nm | Transistor | Min=0.08" [2.04 mm] Typ=0.15" [3.81 mm] Max=0.30" [7.62 mm] | 24" / 26 AWG Wire | C - Offset windows | Phototransistor | 15 | 0.4 | 100 | 2.6 | 100 | 10 nA | 0.01 - 0.70 | 1.0 |
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